element-ios/Riot/Modules/Common/Toasts/RoundedToastView.swift

132 lines
4.7 KiB
Swift

//
// Copyright 2021-2024 New Vector Ltd.
//
// SPDX-License-Identifier: AGPL-3.0-only
// Please see LICENSE in the repository root for full details.
//
import Foundation
import UIKit
import DesignKit
class RoundedToastView: UIView, Themable {
private struct ShadowStyle {
let offset: CGSize
let radius: CGFloat
let opacity: Float
}
private struct Constants {
static let padding = UIEdgeInsets(top: 10, left: 12, bottom: 10, right: 12)
static let activityIndicatorScale = CGFloat(0.75)
static let imageViewSize = CGFloat(15)
static let lightShadow = ShadowStyle(offset: .init(width: 0, height: 4), radius: 12, opacity: 0.1)
static let darkShadow = ShadowStyle(offset: .init(width: 0, height: 4), radius: 4, opacity: 0.2)
}
private lazy var activityIndicator: UIActivityIndicatorView = {
let indicator = UIActivityIndicatorView()
indicator.transform = .init(scaleX: Constants.activityIndicatorScale, y: Constants.activityIndicatorScale)
indicator.startAnimating()
return indicator
}()
private lazy var imageView: UIImageView = {
let imageView = UIImageView()
imageView.contentMode = .scaleAspectFit
imageView.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
imageView.widthAnchor.constraint(equalToConstant: Constants.imageViewSize),
imageView.heightAnchor.constraint(equalToConstant: Constants.imageViewSize)
])
return imageView
}()
private let stackView: UIStackView = {
let stack = UIStackView()
stack.axis = .horizontal
stack.alignment = .center
stack.spacing = 5
return stack
}()
private let label: UILabel = {
return UILabel()
}()
init(viewState: ToastViewState) {
super.init(frame: .zero)
setup(viewState: viewState)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
private func setup(viewState: ToastViewState) {
setupStackView()
stackView.addArrangedSubview(toastView(for: viewState.style))
stackView.addArrangedSubview(label)
label.text = viewState.label
}
private func setupStackView() {
addSubview(stackView)
stackView.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
stackView.topAnchor.constraint(equalTo: topAnchor, constant: Constants.padding.top),
stackView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -Constants.padding.bottom),
stackView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: Constants.padding.left),
stackView.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -Constants.padding.right)
])
}
override func layoutSubviews() {
super.layoutSubviews()
layer.cornerRadius = layer.frame.height / 2
}
override func willMove(toSuperview newSuperview: UIView?) {
super.willMove(toSuperview: newSuperview)
if newSuperview != nil {
NotificationCenter.default.addObserver(self, selector: #selector(self.themeDidChange(notification:)), name: NSNotification.Name.themeServiceDidChangeTheme, object: nil)
} else {
NotificationCenter.default.removeObserver(self, name: NSNotification.Name.themeServiceDidChangeTheme, object: nil)
}
}
@objc private func themeDidChange(notification: Notification) {
update(theme: ThemeService.shared().theme)
}
func update(theme: Theme) {
backgroundColor = theme.colors.system
stackView.arrangedSubviews.first?.tintColor = theme.colors.primaryContent
label.font = theme.fonts.subheadline
label.textColor = theme.colors.primaryContent
let shadowStyle = theme.identifier == ThemeIdentifier.dark.rawValue ? Constants.darkShadow : Constants.lightShadow
layer.shadowColor = UIColor.black.cgColor
layer.shadowOffset = shadowStyle.offset
layer.shadowRadius = shadowStyle.radius
layer.shadowOpacity = shadowStyle.opacity
}
private func toastView(for style: ToastViewState.Style) -> UIView {
switch style {
case .loading:
return activityIndicator
case .success:
imageView.image = Asset.Images.checkmark.image
return imageView
case .failure:
imageView.image = Asset.Images.errorIcon.image
return imageView
case .custom(let icon):
imageView.image = icon?.withRenderingMode(.alwaysTemplate)
return imageView
}
}
}